Oil Economic Geography

What is the correct way to show crude oil production on the economics circular flow diagram?

Public Comments

1. it produces raw materials, and uses labor + capital as inputs. Oil itself is not a renewable resource, it comes from "outside" the circle. Unless you have private ownership of oilfields, in which case it is another form of capital (like land). But oilfields tend to be national property, even in US (they are just leased to private companies)